1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ |
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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5 | %general-entities; |
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6 | ]> |
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7 | |
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8 | <!-- Common GCC-Static --> |
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9 | |
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10 | <sect1 id="ch-cross-tools-gcc-static" role="wrap"> |
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11 | <?dbhtml filename="gcc-static.html"?> |
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12 | |
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13 | <title>Cross GCC-&gcc-version; - Static</title> |
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14 | |
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15 | <indexterm zone="ch-cross-tools-gcc-static"> |
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16 | <primary sortas="a-GCC">GCC</primary> |
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17 | <secondary>cross tools, static</secondary> |
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18 | </indexterm> |
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19 | |
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20 | <sect2 role="package"> |
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21 | <title/> |
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22 | |
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23 | <para>The GCC package contains the GNU compiler collection, which includes |
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24 | the C and C++ compilers.</para> |
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25 | |
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26 | </sect2> |
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27 | |
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28 | <sect2 role="installation"> |
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29 | <title os="a">Installation of Cross GCC Compiler with Static libgcc |
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30 | and no Threads</title> |
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31 | |
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32 | <para os="c">The GCC documentation recommends building GCC outside of the source |
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33 | directory in a dedicated build directory:</para> |
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34 | |
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35 | <screen os="d"><userinput>mkdir -v ../gcc-build |
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36 | cd ../gcc-build</userinput></screen> |
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37 | |
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38 | <para os="e">Prepare GCC for compilation:</para> |
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39 | |
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40 | <!-- This is the common configure line for GCC-Static. --> |
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41 | <!-- It's not actually used by any arch but is here for reference. --> |
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42 | <screen os="ae"><userinput>AR=ar LDFLAGS="-Wl,-rpath,${CLFS}/cross-tools/lib" \ |
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43 | ../gcc-&gcc-version;/configure --prefix=${CLFS}/cross-tools \ |
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44 | --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \ |
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45 | --with-sysroot=${CLFS} --disable-nls --disable-shared \ |
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46 | --with-mpfr=${CLFS}/cross-tools --with-gmp=${CLFS}/cross-tools \ |
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47 | --with-mpc=${CLFS}/cross-tools --without-headers --with-newlib \ |
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48 | --disable-decimal-float --disable-libgomp --disable-libmudflap \ |
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49 | --disable-libssp --disable-threads --enable-languages=c \ |
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50 | --disable-multilib</userinput></screen> |
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51 | |
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52 | <variablelist os="af"> |
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53 | <title>The meaning of the configure options:</title> |
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54 | |
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55 | <varlistentry os="af1"> |
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56 | <term><parameter>--prefix=${CLFS}/cross-tools</parameter></term> |
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57 | <listitem> |
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58 | <para>This tells the configure script to prepare to install the |
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59 | package in the <filename class="directory">${CLFS}/cross-tools</filename> |
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60 | directory.</para> |
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61 | </listitem> |
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62 | </varlistentry> |
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63 | |
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64 | <varlistentry os="af2"> |
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65 | <term><parameter>--build=${CLFS_HOST}</parameter></term> |
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66 | <listitem> |
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67 | <para>This tells the configure script the triplet to use to build GCC. |
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68 | It will use ${CLFS_HOST} as that's where it's being built.</para> |
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69 | </listitem> |
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70 | </varlistentry> |
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71 | |
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72 | <varlistentry os="af3"> |
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73 | <term><parameter>--host=${CLFS_HOST}</parameter></term> |
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74 | <listitem> |
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75 | <para>This tells the configure script the triplet of the machine GCC |
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76 | will be executed on when actually cross compiling. It will use |
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77 | ${CLFS_HOST} as that's where GCC will execute when cross compiling |
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78 | software later.</para> |
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79 | </listitem> |
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80 | </varlistentry> |
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81 | |
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82 | <varlistentry os="af4"> |
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83 | <term><parameter>--target=${CLFS_TARGET}</parameter></term> |
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84 | <listitem> |
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85 | <para>This tells the configure script the triplet of the machine GCC |
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86 | will build executables for. It will use ${CLFS_TARGET} so that software |
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87 | compiled with this version of GCC can be executed on the embedded machine |
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88 | target.</para> |
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89 | </listitem> |
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90 | </varlistentry> |
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91 | |
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92 | <varlistentry os="af5"> |
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93 | <term><parameter>--with-sysroot=${CLFS}</parameter></term> |
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94 | <listitem> |
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95 | <para>This tells configure that ${CLFS} is going to be the root |
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96 | of our system. It will now use the specified sysroot, ${CLFS}, as |
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97 | a prefix of the default search paths.</para> |
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98 | </listitem> |
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99 | </varlistentry> |
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100 | |
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101 | <varlistentry os="af6"> |
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102 | <term><parameter>--disable-nls</parameter></term> |
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103 | <listitem> |
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104 | <para>This disables internationalization as i18n is not needed for the |
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105 | cross-compile tools.</para> |
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106 | </listitem> |
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107 | </varlistentry> |
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108 | |
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109 | <varlistentry os="af7"> |
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110 | <term><parameter>--disable-shared</parameter></term> |
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111 | <listitem> |
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112 | <para>Disables the creation of the shared libraries.</para> |
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113 | </listitem> |
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114 | </varlistentry> |
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115 | |
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116 | <varlistentry os="af8"> |
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117 | <term><parameter>--with-mpfr=${CLFS}/cross-tools</parameter></term> |
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118 | <listitem> |
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119 | <para>Tells configure where to find the |
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120 | <filename class="directory">lib</filename> and |
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121 | <filename class="directory">include</filename> directories |
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122 | that contain MPFR which was built earlier.</para> |
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123 | </listitem> |
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124 | </varlistentry> |
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125 | |
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126 | <varlistentry os="af9"> |
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127 | <term><parameter>--with-gmp=${CLFS}/cross-tools</parameter></term> |
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128 | <listitem> |
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129 | <para>Tells configure where to find the |
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130 | <filename class="directory">lib</filename> and |
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131 | <filename class="directory">include</filename> directories |
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132 | that contain GMP which was built earlier.</para> |
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133 | </listitem> |
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134 | </varlistentry> |
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135 | |
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136 | <varlistentry os="af10"> |
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137 | <term><parameter>--with-mpc=${CLFS}/cross-tools</parameter></term> |
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138 | <listitem> |
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139 | <para>Tells configure where to find the |
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140 | <filename class="directory">lib</filename> and |
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141 | <filename class="directory">include</filename> directories |
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142 | that contain MPC which was built earlier.</para> |
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143 | </listitem> |
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144 | </varlistentry> |
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145 | |
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146 | <varlistentry os="af11"> |
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147 | <term><parameter>--without-headers</parameter></term> |
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148 | <listitem> |
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149 | <para>Tells configure to not use any headers from any C libraries. |
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150 | This is needed as we haven't yet built the C library and to prevent |
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151 | influence from the host environment.</para> |
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152 | </listitem> |
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153 | </varlistentry> |
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154 | |
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155 | <varlistentry os="af12"> |
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156 | <term><parameter>--with-newlib</parameter></term> |
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157 | <listitem> |
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158 | <para>Tells configure to build libgcc without needing any C |
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159 | libraries.</para> |
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160 | </listitem> |
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161 | </varlistentry> |
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162 | |
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163 | <varlistentry os="af13"> |
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164 | <term><parameter>--disable-decimal-float</parameter></term> |
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165 | <listitem> |
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166 | <para>Tells configure to disable IEEE 754-2008 decimal floating |
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167 | point support. Decimal floating point support isn't needed yet.</para> |
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168 | </listitem> |
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169 | </varlistentry> |
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170 | |
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171 | <varlistentry os="af14"> |
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172 | <term><parameter>--disable-libgomp</parameter></term> |
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173 | <listitem> |
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174 | <para>Tells configure to not build the GOMP run-time libraries. |
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175 | GOMP is the GNU implementation of OpenMP, a API for shared-memory |
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176 | parallel programming.</para> |
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177 | </listitem> |
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178 | </varlistentry> |
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179 | |
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180 | <varlistentry os="af15"> |
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181 | <term><parameter>--disable-libmudflap</parameter></term> |
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182 | <listitem> |
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183 | <para>Tells configure to not build libmudflap. Mudflap is a |
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184 | library that can be used to help check for proper pointer usage.</para> |
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185 | </listitem> |
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186 | </varlistentry> |
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187 | |
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188 | <varlistentry os="af16"> |
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189 | <term><parameter>--disable-libssp</parameter></term> |
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190 | <listitem> |
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191 | <para>Tells configure not to build run-time libraries for stack |
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192 | smashing detection.</para> |
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193 | </listitem> |
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194 | </varlistentry> |
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195 | |
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196 | <varlistentry os="af17"> |
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197 | <term><parameter>--disable-threads</parameter></term> |
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198 | <listitem> |
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199 | <para>This will prevent GCC from looking for the multi-thread |
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200 | include files, since they haven't been created for this architecture |
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201 | yet. GCC will be able to find the multi-thread information after |
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202 | the glib headers are created.</para> |
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203 | </listitem> |
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204 | </varlistentry> |
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205 | |
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206 | <varlistentry os="af18"> |
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207 | <term><parameter>--enable-languages=c</parameter></term> |
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208 | <listitem> |
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209 | <para>This option ensures that only the C compiler is built.</para> |
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210 | </listitem> |
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211 | </varlistentry> |
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212 | |
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213 | <varlistentry os="af19"> |
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214 | <term><parameter>--disable-multilib</parameter></term> |
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215 | <listitem> |
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216 | <para>This option specifies that multiple target libraries should |
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217 | not be built.</para> |
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218 | </listitem> |
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219 | </varlistentry> |
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220 | |
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221 | </variablelist> |
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222 | |
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223 | <para os="ah">Continue with compiling the package:</para> |
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224 | |
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225 | <screen os="ai"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
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226 | |
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227 | <para os="aj">Install the package:</para> |
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228 | |
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229 | <screen os="ak"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
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230 | |
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231 | </sect2> |
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232 | |
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233 | <sect2 role="content"> |
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234 | <title/> |
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235 | |
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236 | <para>Details on this package are located in <xref |
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237 | linkend="contents-gcc" role="."/></para> |
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238 | |
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239 | </sect2> |
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240 | |
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241 | </sect1> |
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